Mostly you would say something is "the shit" if it's bangin or something, but if it happens to be particulary phat, you could elaborate, saying something is "the shit's tits" being the best or most valuable part of the shit, or the "best of the best."
igg 1: You ever had Smirnoff Ras with Cranberry and Grapefruit juice?
igg 2: Yeah dude, that stuff's the shit's tits!
by Adam November 6, 2007
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1. When ones tits have so much shit on them you want to barf.

2. A disgusting tit that is covered in human fecal matter and cannot be licked clean due to poor hygeine methods. Sometimes used in Scat pornos
dude, that shit tit just made me so fuck
Oh my god get that shit tit away from me
Im gonna lick that shit tit clean.
by Deany Weany Beany Feany October 30, 2006
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A word used to describe a girl who either has really small tits or has saggy organgutan tittys.
Hey dude you know that girl sharmane, she has some shit tits.
by poomp head October 29, 2006
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One (A female) who stuffs shit into their bra.
by MRAHHHHH August 18, 2007
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simply a savory exclamation. combining unusual naughty words is neat
moreover, one can be considered a shit-tit as well as the converse where one accuses another of shit-titdom.
Shit-tit! Where the fuck did you hide those pills kid?!

Jeff you shit-tit stop diddling my Robin Williams and go back to sleep!
by Championship Wrestling January 27, 2011
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an awesome word meaning tits that are extremely shitty. this phrase is normally said when scared, or when you feel like being awesome.
"HOLY SHIT TITS!"

"whoa dude look at those shit tits"
by Some Douch February 4, 2010
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